That would look even worse for him, and be unsatisfying for his opponent and the public. In this case, he realizes he doesn't have the passion for this event any more, so he's doing the best thing for the sport and just letting two people who are still passionate about it compete instead of doing the mental-sports version of playing injured.
By resources i mean things like going into a position that gives your opponent an incredibly small advantage but is hard for them to play. It's one of the best ways to win games. it's hard work to find those lines, and he's been doing it for so long at WCC level it's not surprising that he's tapping out against someone he's already beaten. if you use a line in the WCC, it becomes very risky to use it again - because if your opponent studied it and plays it correctly then all you've done is make it even harder for you to win the game.
to reach 2900 he has to win games, not tie
It’s a mix of having a new perspective, dealing with stress, and having time to heal etc. This is one of the reasons most sports have an off season. Even if basketball could easily be played year round, the game would suffer.
He's just not playing in the FIDE World Championship because he dislikes the process.
Surely, if one can quit without it being considered breaking, resigning while on top is how.
Yes, every championship title eventually goes to someone else.
